Hi; I just switched from a '92 40hp Johnson to a '98 70hp Johnson on my 92 Bass Tracker tx 17.
1) The 40 was a 2 cyl, the 70 is a 3 cyl, I am not sure if the tach is reading properly. How can I adjust, or confirm if the gauge is reading right ?
2) Moved up from 27.8 mph top speed to 37.1, but...